Also designated on cover as Giant (DC, 1969 series) #G62 and as G-62 on indicia page.
On-sale date from Adventure Comics (DC, 1938 series) #383.
On-sale date confirmed from the publication date reported to the U.S. Copyright Office found in the Catalog of Copyright Entries, Third Series, Volume 23, Part 2, Periodicals, January-December 1969. Class B periodical. Copyright registration number B514607. Cover date reported as being August-September 1969.